#include "io430.h"
#include "intrinsics.h"

int main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;

  ADC10CTL0 = ADC10SHT_2 + ADC10ON +  REF2_5V + REFON;
  ADC10CTL1 = INCH_1;
  ADC10DTC1 = 0x001;                        // 1 conversion
  P1DIR |= 0x01;                            // P1.2 = output
  P1SEL |= 0x02;   // ou équivalent   ADC10AE0 |= 0x02;  // P1.1 ADC option select
  P1OUT = 0X01;
  
  TACTL = TASSEL_2 + MC_1 + TAIE;           // SMCLK, up mode
  CCR0 = 512-1;                             // PWM Period
  CCR1 = 13;                                 // CCR1 PWM duty cycle
  CCTL1 = CCIE;                             // CCR1 interrupt enabled
  __enable_interrupt();
  
  while(1)
  {
    ADC10CTL0 |= ENC + ADC10SC;             // Start sampling
    CCR1 = ADC10MEM >> 1;
  }
}

// Timer_A Interrupt Vector (TAIV) handler
#pragma vector=TIMERA1_VECTOR
__interrupt void Timer_A(void)
{ unsigned int tar = TAR;  
  if (TAIV)
  { if (tar <= CCR1)
       P1OUT |= 0x01;
    else P1OUT = 0x00; 
  } 
}